A balanced three-phase delta-connected load is connected to a balanced three-phase delta-connected source via a transmission...

A balanced three-phase delta-connected load is connected to a balanced three-phase delta-connected source via a transmission line. The line-line voltage for the source is 100∟0° V/phase and the impedance of load is (27 + j18) Ω/phase. The transmission line has an impedance of (1 + j4) Ω/line.

a) Draw the complete schematic of the power system showing the location of wattmeters. (Two-Wattmeter system is considered for this problem). Phase “a” could be considered as a reference phase.

b) What must be the readings on the two wattmeters?

c) What is the total power supplied to the load.

Solutions

Expert Solution

Manojponduru answered 1 year ago

Next > < Previous

Related Solutions

An unbalanced three-phase wye-connected and grounded load is connected to a balanced three-phase four-wire source. The...

An unbalanced three-phase wye-connected and grounded load is connected to a balanced three-phase four-wire source. The load impedances are Za = 14+j3 Ω , Zb = 5-j24Ω and Zc =1+j14 Ω and the phase a line voltage has an effective value of 18 Kv: use line-to-neutral voltage of phase A as a reference. Find the line and neutral current, also find the reactive power delivered to load and power factor.

A balanced three-phase delta-connected source has a line veltage of 120 V. It is connected to...

A balanced three-phase delta-connected source has a line veltage of 120 V. It is connected to a load via a three-wire transmission line. The per-phase impedance of the delta-connected load is 30 + 120j (2. The impedance of each wire of the transmission line is 2 + 4j 2. How much power is dissipated by the load? By the transmission line? What is the power factor of the load? What is the overall power factor?

A balanced three-phase generator delivers 6.3 kW to a delta-connected load with impedance 13 - j23.4...

A balanced three-phase generator delivers 6.3 kW to a delta-connected load with impedance 13 - j23.4 Ω per phase. The magnitude of the line current ILis:

Three balanced 3-phase loads are connected in parallel. Load 1 is Y-connected with an impedance of...

Three balanced 3-phase loads are connected in parallel. Load 1 is Y-connected with an impedance of 400 + j300 ? per phase, load 2 is ?-connected with an impedance of 2400 – j1800 ? per phase, and load 3 is absorbing 172.8 + j2203.2 kVA. The loads are fed from a set of distribution lines with an impedance of 2 + j16 ? per line. The magnitude of the line-to-neutral voltage at the load end of the line is 24?3...

In a three-phase circuit the balanced delta load of (36 +j54) ohms is fed by impedance...

In a three-phase circuit the balanced delta load of (36 +j54) ohms is fed by impedance conductors (5 +j70) ohms. If the generator voltage is 120 V angle 0° phase A, calculate a) the bc voltage on the load, b) the powers in the conductors, c) the bc voltage of the delta load and d) the power delta on the load.

b) The load connected to a three-phase supply comprises three similar coils connected in star. If...

b) The load connected to a three-phase supply comprises three similar coils connected in star. If the phase currents are 10A and the total active power and power factor absorb by the loads are 3kW and 0.8 lagging, respectively. Find: i. The magnitude of phase and line voltages ii. Total apparent power (1 mark) iii. The impedance of each coil. c) If the coil in Q3(b) are now connected in delta to the same three-phase supply, calculate the magnitude of...

A 280-V, 3Ø AC power system, Y-connected three-phase generator connected through a three-phase transmission line to...

A 280-V, 3Ø AC power system, Y-connected three-phase generator connected through a three-phase transmission line to a Y-connected load. The transmission line has an impedance of (0.02+j0.4) Ω/phase, and the load has an impedance of (4+j3) Ω per phase. Determine the;(a)line current (IL) at the load [2Marks] (b)line and phase voltage of the load[2 Marks](c)active power, reactive and apparent power [2 Marks](d) power factor and specify whether it is lagging or leading. [4 Marks]

A three-phase balanced star load No. 1 of (120 +j90) ohms in parallel with another three-phase...

A three-phase balanced star load No. 1 of (120 +j90) ohms in parallel with another three-phase balanced star load No. 2 of (90 +j120) ohms, both are fed by three-phase balanced conductors of 3 ohms resistance and 4 ohms reactance. If the generator is 240 volts, with angle of -150° on phase c and reactance of 1 ohms, determine: a) the current on load N°1 on phase C, b) the terminal voltage of the generator on phase B, c) the...

A three-phase motor is delta connected to a 415 V, 60 Hz line. If the line...

A three-phase motor is delta connected to a 415 V, 60 Hz line. If the line current is 25 A and the motor power factor is 0.75, how much power is consumed by the motor (a) Determine the size of the bank of three capacitors to improve the power factor of the motor to 0.95. The capacitors are delta connected. (b) If two of the motors work together, what is the size of capacitors to correct the power factor to...

Given a balanced three-phase delta-connected generator with positive sequence and voltage Vbc=350∠−90∘Vbc=350∠−90∘ Vrms. The generator feeds...

Given a balanced three-phase delta-connected generator with positive sequence and voltage Vbc=350∠−90∘Vbc=350∠−90∘ Vrms. The generator feeds a balanced three-phase delta-connected load having an impedance of 43.5+j27 Ω/phase. The impedance of the line connecting the generator to the load is 1.5+j1 Ω/phase. i) Calculate the total real power consumed by the load. [5] ii) Calculate the percentage of the total available real power lost in the lines.[3]

Subjects